The Mastigophora 167 



"Phacus"; Khawkinea Jahn and McKibben (120), similar to Euglena except for the 

 absence of chromatophores; Klebsiella Pascher (215; Fig. 4. 33, K, L); Lepocinclis Perty 

 (49, 202; Fig. 4. 35, J); Menoidium Perty (236, 238; Fig. 4. 35, M); Phacus Dujardin 

 (3, 202, 230; Fig. 4. 34, H-L); Rhabdoinonas Fresenius (99, 238; Fig. 4. 35, G); Tra- 

 chelomonas Ehrenberg (60, 202; Figs. 4. 33, J, 4. 34, F). In addition, Euglenocapsa 

 Steinecke (263), in which a palmella stage is dominant, may be a valid genus. 



Suborder 2. Peranemoidina. These are colorless, metabolic types with 

 two flagella, one of which is trailed. Each flagellum is said to be swollen 



Fig. 4. 37. A. Marsupiogaster striata Schewiakoff, x835 (after S.). B. Etito- 

 siphon sulcatum (Duj.) Stein; length, 20-25/t; siphon, gullet, nucleus and 

 food vacuoles; schematic (after Lackey). C, D. Triangulomonas rigida 

 Lackey; 18x15;^; surface and lateral views (after L.). E. Sphenomonas teres; 

 length, 20-40/i; large retractile inclusion of uncertain nature, smaller para- 

 mylum bodies (after Hollande). F. Tropidoscyphus octocostalus Stein, show- 

 ing prominent ridges; x412 (after Lemmermann). G. Anisonema aci^ius Duj., 

 showing one "pharyngeal-rod," nucleus, ingested food; x633 (after Lemmer- 

 mann). H. Notosolenus apocarnptus Stokes; length, S-lO^ii; short trailing 

 flagellum arises from convex ventral surfaces (after S.). I,J. Petalomonas 

 dorsalis Stokes, 38-45/n; entire flagellate and optical cross-section (after 

 Shawhan and Jahn). 



